National Museum of Nuclear Science & History
Lew Kowarski was a Russian-born French physicist. He worked as part of the team that discovered that neutrons were emitted in the fission of uranium-235 in the 1930s, setting the groundwork for the use of nuclear chain reactions in the design of the atomic bomb.
Crouthamel worked in the United States Engineer District Office.
Harvey B. Lemon (1885-1965) was a consultant to the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Hokanson worked at the 300 at Hanford during the Manhattan Project.
